Add flour, yeast, salt, and sugar to the bowl of a stand mixer and mix on low speed. With mixer running, slowly add milk, egg, & melted butter. Knead in mixer for 5 minutes.
3 cups all-purpose flour, 2 tsp salt, 2 ¼ tsp instant yeast, 1 tbsp sugar, ¾ cup warm milk, 4 tbsp butter, 1 egg
Remove from mixer and knead on lightly floured surface for another 1-2 minutes. If you don’t have a stand mixer then you can do this whole process by hand. You will know it’s ready if after several minutes of kneading you press your finger into the dough and the indentation springs back. If it doesn’t spring back, then keep kneading a bit longer.
Shape dough into a ball, place in lightly oiled bowl, and cover. Let dough rise for 60-90 minutes, or until doubled in size.
Make the thyme honey mustard by whisking together mayo, mustard, honey, and thyme in a small bowl.
3 tbsp mayonnaise, 1 ½ tbsp spicy brown mustard, ½ tbsp honey, 1 tbsp fresh thyme
Punch down the dough and remove it from the bowl. Shape into a ball, cover with a towel, and let rest for 15 minutes.
Prepare a 9x5 inch loaf pan by brushing it lightly with butter or spraying it with nonstick spray and lining it with parchment paper.
Roll out dough to a 16x10 inch rectangle with the longer side parallel to the counter edge. Spread thyme honey mustard on the dough. Place 4 slices of cheese along top side of dough and 4 along side closest to you. Cover each slice of cheese with ham.
8 slices Swiss cheese, 8 slices ham
Cut around each cheese and ham section, creating 8 squares. Fold each square in half with cheese and ham inside, dough on the outside, and with the open side facing up, kind of like a taco. Place each folded square, open side up, into the loaf pan, one after the other all pressed together. Cover with towel & let rise for 45 min.
Preheat oven to 375F. Once the dough has risen this final time, brush the loaf with melted butter and top with grated parmesan. Bake 60-75 min (cover with foil halfway through, if too dark), or until internal temp is 190F.
1 tbsp melted butter, Grated parmesan cheese